307 lines
8.6 KiB
C#
307 lines
8.6 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="RegexIR"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.RegularAnalysis.Text
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{
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internal enum RegexIRCommand
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{
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Match_Seq = 1 << 0,
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Match_Set = 1 << 1,
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Condition = 1 << 2,
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Try = 1 << 3,
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Count_Complex = 1 << 4,
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Count_Seq = 1 << 5,
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Count_Set = 1 << 6,
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Pop = 1 << 7,
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Pack = 1 << 8,
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Find_Seq = 1 << 9,
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Find_Set = 1 << 10,
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Find_Complex = 1 << 11,
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Match = Match_Seq | Match_Set,
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Count = Count_Seq | Count_Set | Count_Complex,
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}
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internal enum RegexIRPrefix
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{
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Prev_Success = 1 << 0,
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Prev_Fail = 1 << 1,
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Always = 1 << 2,
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ExeCondition = Prev_Fail | Prev_Success | Always,
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Pop_Fail = 1 << 3,
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Pop_Success = 1 << 4,
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Pop_Condition = Pop_Success | Pop_Fail,
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}
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internal interface IRegexComplex
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{
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bool IsFullyOptimized { get; set; }
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int CommandCount { get; set; }
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}
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internal interface IRegexCount
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{
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bool IsGreedy { get; }
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bool IsStar { get; }
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bool IsPlus { get; }
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int Min { get; }
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int Max { get; }
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}
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internal sealed class RegexFindComplexIR(bool nearest, int count) : RegexIR, IRegexComplex
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{
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public bool IsFullyOptimized { get; set; }
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public bool IsNearest { get; } = nearest;
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public int CommandCount { get; set; } = count;
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internal override RegexIRCommand Command => RegexIRCommand.Find_Complex;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t FIND_COMPLEX {(IsNearest ? "NEAREST" : "FURTHEST")} COUNT: {CommandCount}";
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}
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}
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internal abstract class RegexIR
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{
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internal abstract RegexIRCommand Command { get; }
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internal abstract string AsCommand(int lineNum);
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}
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internal sealed class RegexFindSeqIR(string pattern, bool isFirst) : RegexIR
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{
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public bool IsFirst { get; } = isFirst;
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public string Pattern { get; } = pattern;
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internal override RegexIRCommand Command => RegexIRCommand.Find_Seq;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t FIND_SEQ \"{(string.IsNullOrEmpty(Pattern) ? "<EPSILON>" : Pattern)}\"";
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}
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}
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/// <summary>
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/// Searches for a certain string pattern or charset from current position.
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/// </summary>
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internal sealed class RegexMatchSeqIR(string pattern) : RegexIR
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{
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public string Pattern { get; } = pattern;
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internal override RegexIRCommand Command => RegexIRCommand.Match_Seq;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t MATCH_SEQ \"{(string.IsNullOrEmpty(Pattern) ? "<EPSILON>" : Pattern)}\"";
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}
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}
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internal sealed class RegexMatchSetIR(string charset) : RegexIR
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{
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public string Charset { get; } = charset;
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internal override RegexIRCommand Command => RegexIRCommand.Match_Set;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t MATCH_SET \"{Charset}\"";
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}
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}
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internal sealed class RegexConditionIR(int success, int fail) : RegexIR
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{
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public int SuccessCase { get; } = success;
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public int FailCase { get; } = fail;
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internal override RegexIRCommand Command => RegexIRCommand.Condition;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t CONDITION SUCCESS: {SuccessCase} FAIL: {FailCase}";
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}
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}
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internal sealed class RegexPackIR(bool condition, string name = "") : RegexIR
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{
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public bool Condition { get; } = condition;
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public string GroupName { get; } = name;
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internal override RegexIRCommand Command => RegexIRCommand.Pack;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t PACK {(Condition ? "SUCCESS" : "FAIL")} GROUP: \"{GroupName}\"";
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}
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}
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internal sealed class RegexCountComplexIR(int min, int max, bool isGreedy, int operation) : RegexIR, IRegexCount, IRegexComplex
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{
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public bool IsGreedy { get; } = isGreedy;
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public bool IsStar => Min == 0 && Max < 0;
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public bool IsPlus => Min == 1 && Max < 0;
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public bool IsFullyOptimized { get; set; }
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public int Min { get; } = min;
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public int Max { get; } = max;
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public int CommandCount { get; set; } = operation;
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internal override RegexIRCommand Command { get; } = RegexIRCommand.Count_Complex;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t COUNT {(IsGreedy ? "GREEDY" : "NON_GREEDY")} MIN: {Min} MAX: {Max} OPERATION: {CommandCount}";
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}
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}
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internal sealed class RegexCountSeqIR(int min, int max, bool isGreedy, string seq) : RegexIR, IRegexCount
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{
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public bool IsGreedy { get; } = isGreedy;
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public bool IsStar => Min == 0 && Max < 0;
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public bool IsPlus => Min == 1 && Max < 0;
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public int Min { get; } = min;
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public int Max { get; } = max;
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public string Sequence { get; } = seq.Length == 2 && seq[0] == '\\' ? seq[1..2] : seq;
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internal override RegexIRCommand Command { get; } = RegexIRCommand.Count_Seq;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t COUNT_SEQ {(IsGreedy ? "GREEDY" : "NON_GREEDY")} MIN: {Min} MAX: {Max} SEQ: \"{Sequence}\"";
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}
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}
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internal sealed class RegexCountSetIR(int min, int max, bool isGreedy, string set) : RegexIR, IRegexCount
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{
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public bool IsGreedy { get; } = isGreedy;
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public bool IsDotStar => CharSet == "." && Min == 0 && Max < 0;
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public bool IsStar => Min == 0 && Max < 0;
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public bool IsPlus => Min == 1 && Max < 0;
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public int Min { get; } = min;
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public int Max { get; } = max;
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public string CharSet { get; } = set;
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internal override RegexIRCommand Command => RegexIRCommand.Count_Set;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t COUNT_SET {(IsGreedy ? "GREEDY" : "NON_GREEDY")} MIN: {Min} MAX: {Max} SET: \"{CharSet}\"";
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}
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}
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internal sealed class RegexTryIR(int count) : RegexIR, IRegexComplex
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{
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public bool IsFullyOptimized { get; set; }
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public int CommandCount { get; set; } = count;
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internal override RegexIRCommand Command => RegexIRCommand.Try;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t TRY {CommandCount}";
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}
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}
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internal sealed class RegexPopIR(bool isSuccess) : RegexIR
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{
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public bool IsSuccess { get; } = isSuccess;
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internal override RegexIRCommand Command => RegexIRCommand.Pop;
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internal override string AsCommand(int lineNum)
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{
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return $"[{lineNum}]\t POP {(IsSuccess ? "SUCCESS" : "FAIL")}";
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}
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}
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}
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